Pleroma/lib/pleroma/migration_helper/notification_backfill.ex
rinpatch 5c0e1039ce Chunk the notification type backfill migration
Long-term we want that migration to be done entirely in SQL,
but for now this is a hotfix to not cause OOMs on large databases.

This is using a homegrown version of `Repo.stream`, it's worse in
terms of performance than the upstream since it doesn't use the same
prepared query for chunk queries, but unlike the upstream it supports
preloads.
2020-06-16 23:53:13 +03:00

86 lines
2.1 KiB
Elixir

# Pleroma: A lightweight social networking server
# Copyright © 2017-2020 Pleroma Authors <https://pleroma.social/>
# SPDX-License-Identifier: AGPL-3.0-only
defmodule Pleroma.MigrationHelper.NotificationBackfill do
alias Pleroma.Notification
alias Pleroma.Object
alias Pleroma.Repo
alias Pleroma.User
import Ecto.Query
def fill_in_notification_types do
query =
from(n in Pleroma.Notification,
where: is_nil(n.type),
preload: :activity
)
query
|> Repo.chunk_stream(100)
|> Enum.each(fn notification ->
type =
notification.activity
|> type_from_activity()
notification
|> Notification.changeset(%{type: type})
|> Repo.update()
end)
end
# This is copied over from Notifications to keep this stable.
defp type_from_activity(%{data: %{"type" => type}} = activity) do
case type do
"Follow" ->
accepted_function = fn activity ->
with %User{} = follower <- User.get_by_ap_id(activity.data["actor"]),
%User{} = followed <- User.get_by_ap_id(activity.data["object"]) do
Pleroma.FollowingRelationship.following?(follower, followed)
end
end
if accepted_function.(activity) do
"follow"
else
"follow_request"
end
"Announce" ->
"reblog"
"Like" ->
"favourite"
"Move" ->
"move"
"EmojiReact" ->
"pleroma:emoji_reaction"
# Compatibility with old reactions
"EmojiReaction" ->
"pleroma:emoji_reaction"
"Create" ->
activity
|> type_from_activity_object()
t ->
raise "No notification type for activity type #{t}"
end
end
defp type_from_activity_object(%{data: %{"type" => "Create", "object" => %{}}}), do: "mention"
defp type_from_activity_object(%{data: %{"type" => "Create"}} = activity) do
object = Object.get_by_ap_id(activity.data["object"])
case object && object.data["type"] do
"ChatMessage" -> "pleroma:chat_mention"
_ -> "mention"
end
end
end